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Message-ID: <20230802074948.136468-2-yangjihong1@huawei.com>
Date: Wed, 2 Aug 2023 07:49:42 +0000
From: Yang Jihong <yangjihong1@...wei.com>
To: <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
<mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>,
<jolsa@...nel.org>, <namhyung@...nel.org>, <irogers@...gle.com>,
<adrian.hunter@...el.com>, <kan.liang@...ux.intel.com>,
<james.clark@....com>, <tmricht@...ux.ibm.com>,
<ak@...ux.intel.com>, <anshuman.khandual@....com>,
<linux-kernel@...r.kernel.org>, <linux-perf-users@...r.kernel.org>
CC: <yangjihong1@...wei.com>
Subject: [PATCH v4 1/7] perf evlist: Add perf_evlist__go_system_wide() helper
For dummy events that keep tracking, we may need to modify its cpu_maps.
For example, change the cpu_maps to record sideband events for all CPUS.
Add perf_evlist__go_system_wide() helper to support this scenario.
Signed-off-by: Yang Jihong <yangjihong1@...wei.com>
---
tools/lib/perf/evlist.c | 9 +++++++++
tools/lib/perf/include/internal/evlist.h | 2 ++
2 files changed, 11 insertions(+)
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c
index b8b066d0dc5e..3acbbccc1901 100644
--- a/tools/lib/perf/evlist.c
+++ b/tools/lib/perf/evlist.c
@@ -738,3 +738,12 @@ int perf_evlist__nr_groups(struct perf_evlist *evlist)
}
return nr_groups;
}
+
+void perf_evlist__go_system_wide(struct perf_evlist *evlist, struct perf_evsel *evsel)
+{
+ if (!evsel->system_wide) {
+ evsel->system_wide = true;
+ if (evlist->needs_map_propagation)
+ __perf_evlist__propagate_maps(evlist, evsel);
+ }
+}
diff --git a/tools/lib/perf/include/internal/evlist.h b/tools/lib/perf/include/internal/evlist.h
index 3339bc2f1765..d86ffe8ed483 100644
--- a/tools/lib/perf/include/internal/evlist.h
+++ b/tools/lib/perf/include/internal/evlist.h
@@ -135,4 +135,6 @@ int perf_evlist__id_add_fd(struct perf_evlist *evlist,
void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader);
+
+void perf_evlist__go_system_wide(struct perf_evlist *evlist, struct perf_evsel *evsel);
#endif /* __LIBPERF_INTERNAL_EVLIST_H */
--
2.30.GIT
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